1. Kavanagh BF, Wallrichs S, Dewitz M, Berry D, Currier B, Ilstrup D, Coventry MB. Charnley low-friction arthroplasty of the hip, Twenty-year results with cement. J Arthroplasty. 1994;9:229–34.
2. Berry DJ, Harmsen WS, Cabanela ME, Morrey BF. Twenty-five-year survivorship of two thousand consecutive primary Charnley total hip replacements: factors affecting survivorship of acetabular and femoral components. J Bone Joint Surg Am. 2002;84-A:171–7.
3. Grubl A, Chiari C, Giurea A, Gruber M, Kaider A, Marker M, Zehetgruber H, Gottsauner-Wolf F. Cementless total hip arthroplasty with the rectangular titanium Zweymuller stem. A concise follow-up, at a minimum of fifteen years, of a previous report. J Bone Joint Surg Am. 2006;88:2210–5.
4. Mittelmeier W, Grunwald I, Schafer R, Grundei H, Gradinger R. Cementless fixation of the endoprosthesis using trabecular, 3-dimensional interconnected surface structures. Orthopade. 1997;26:117–24.
5. Bobyn JD, Pilliar RM, Cameron HU, Weatherly GC, Kent GM. The effect of porous surface configuration on the tensile strength of fixation of implants by bone ingrowth. Clin Orthop Relat Res. 1980;149:291–8.